Poradniki
How to Set a World Border on Your Minecraft Server
A world border stops players from exploring forever. That keeps the world small, which helps disk space and lag.
Set it from the console
Open Console while the world is online and type, without the slash:
worldborder center 0 0sets the middle.worldborder set 10000makes the border 10,000 blocks wide (5,000 in each direction from the center).worldborder getshows the current size.
Why it helps
Every new chunk players explore is generated and saved. Each plan has a disk limit, and big worlds also make downloads and backups slower. A border plus pregeneration keeps exploring smooth.
Want to try this on a real server? Campfire is free and runs Vanilla. Village adds plugins, Kingdom adds mods and modpacks.